Riga Health Impact
Riga averaged 8.6 ug/m3 PM2.5, equal to 1.7x the WHO annual PM2.5 guideline and about 0.4 cigarettes per day by the simple AQI Now indicator. The page uses OpenAQ-derived daily history for 3 mapped monitoring locations in Riga, Latvia.
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Average EPA AQI
41
Rank 3 of 4 cities by average AQI
PM2.5
8.6
ug/m3 annualized city average
Seasonality
January
Cleanest: July
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Riga
54
47
52
43
46
41
31
32
39
42
32
39
What this health page measures
Translate PM2.5 exposure into WHO exceedance and a simple cigarette-equivalent indicator.
For Riga, the current global analytics build covers 344 daily rows from 2024-01-01 to 2024-12-31. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.